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Alexandrite

Tsarstone collectors guide

Organizations

List of organizations involved in the regulating of gemstone and jewelry trade, mining and dedicated to scientific study of gem materials.

Resource listing

The International Colored Gemstone Association
An independent non-profit association that was founded in 1983 to represent the international gemstone industry
www.gemstone.org
American Gem Trade Association
A group of US and Canadian professionals dedicated to promoting the natural colored gemstone and cultured pearl trade
www.agta.org
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Bibliographic details
Page title Organizations
Author David Weinberg
Website title Alexandrite Tsarstone Collectors Guide
Date published 12 August 2011 01:13 UTC
Date accessed 11 June 2026 06:08 UTC
Permanent link http://w.alexandrite.com/viewpage.html?id=ALX-016
AMA style
David Weinberg. "Organizations". In Alexandrite Tsarstone Collectors Guide. August 12, 2011, 01:13 UTC. Available at: http://w.alexandrite.com/viewpage.html?id=ALX-016. Accessed June 11, 2026.
APA style
"Organizations". (2011, August 12). In Alexandrite Tsarstone Collectors Guide. Retrieved 06:08, June 11, 2026, from http://w.alexandrite.com/viewpage.html?id=ALX-016.
Bluebook style
"Organizations", http://w.alexandrite.com/viewpage.html?id=ALX-016 (last visited June 11, 2026).
Bluebook: Harvard JOLT style
See Alexandrite Tsarstone Collectors Guide, "Organizations", http://w.alexandrite.com/viewpage.html?id=ALX-016 (List of organizations involved in the regulating of gemstone and jewelry trade, mining and dedicated to scientific study of gem materials.) (as of Jun. 11, 2026, 06:08 GMT).
CBE/CSE style
David Weinberg. "Organizations". In Alexandrite Tsarstone Collectors Guide. 2011 Aug 12, 01:13 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2011 Aug 12, 01:13 UTC [cited 2026 Jun 11]. Available from: http://w.alexandrite.com/viewpage.html?id=ALX-016.
Chicago style
David Weinberg, "Organizations", http://w.alexandrite.com/viewpage.html?id=ALX-016, (accessed June 11, 2026).
MLA style
"Organizations". Alexandrite Tsarstone Collectors Guide. 12 Aug 2011, 01:13 UTC. 11 Jun 2026 http://w.alexandrite.com/viewpage.html?id=ALX-016
MHRA style
David Weinberg, "Organizations", Alexandrite Tsarstone Collectors Guide, 12 August 2011, 01:13 UTC, http://w.alexandrite.com/viewpage.html?id=ALX-016 [accessed 11 June 2026].
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